Wanted spy posters - I made wanted posters of all our teachers and workers wearing disguises. We gave them all spy names. It was a game for the kids and members of the church to discover who all the spies were.
A lot of great stuff on this link: Best is a link to a QR code generator - those square things you can scan with your phone. You can input clues and it Will generate a QR code you can print and the Kids can scan them for a treasure hunt!